Overview Smiths medical has a wide selection of small bore and micro bore extension sets for use with our leading medfusion® 3500 syringe pump. Mini-vol micro bore extension sets feature low priming volumes that enable small-volume infusions. Ultra lipid resistant, non-PVC, and non-DHEP formulation sets are also available to meet your various clinical needs. You can also design a small bore extension set to your exact specifications through our specialty set program all sets are provided sterile. Smartsite® is a registered trademark of cardinal health, inc. Click on “image” in table for a larger view.